Originally posted by Kameraten Well, actually DNG does include a full-size jpeg preview made with the settings you specify for jpeg on the camera. Probably your software just hasn't been set to use it.
Secondly, storing the editing information in sidecar files or in a unified database is an option in Adobe Camera Raw (ACR), not a feature of the raw files.
DNG is, because of it's universal compatibility, the only thing that keeps me still hanging on to Pentax.
I use Adobe Photoshop CC 2014 & Lightroom 5.6 and have used Photoshop for a very long time
FYI;
1.1) Advantages of RAW format
RAW files contain full JPEG Previews that were processed by the camera, using the camera settings you chose when you shot the image.
2.1) What are the advantages of DNG format?
DNG files are generally smaller than RAW files and can be made even smaller if minimal or no JPEG Preview is stored within the file.
Mine store no jpeg preview info. Now I will admit if you have saved your files in Pef or any camera raw format and are using Lightroom to convert them, in your preferences you can specify the size of jpeg preview to save or not to save at all in your dng conversion. Read convert photos .
Adobe Photoshop Lightroom 4 * Manage photos.. Here again afaik in camera dng doesn't save a preview or saves very minimal jpeg preview information, at least that is what I have ascertained from my files. My original posting could have been worded slightly better to indicate some minimal to no jpeg preview, even still it does attribute to a reduction in file size.
"Secondly, storing the editing information in sidecar files or in a unified database is an option in Adobe Camera Raw (ACR), not a feature of the raw files."
Not true afaik, show us where that option is in ACR is I'd really like to know how you are doing that with a camera raw file.. From what I know of my several years of using Photoshop a camera raw file either has to be converted to dng with Adobe dng converter prior to editing in camera raw or if not Photoshop will automatically create a sidecar .xmp file when editing a camera raw format.
FYI
1.2) Disadvantages of RAW format
Because RAW files cannot be modified by third party software, your settings will have to be stored in a separate sidecar (XMP) file, which means more storage and tougher file management.
2.1) What are the advantages of DNG format?
Changes to images can be written directly into DNG files without having to create separate sidecar XMP files to store this data. This simplifies file management.
I agree I do like the dng universal compatabilty and the fact now my Pentax camera, unlike my previous system, has the ability to utilize dng in camera. It saves me a lot by not having to convert my files but it sure isn't what keeps me hanging on to my Pentax. I am not fan loyal by any means and if Pentax didn't suit my current wants and needs I would be using something else that did. Especially since afaik most camera raw files can be converted to dng so I wouldn't be forced to change my software choices one iota by changing systems.
If anyone care to read the article I used for example information it can be found here.....
DNG vs RAW